diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..71254c7
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "apps/maddy"]
+	path = apps/maddy
+	url = https://github.com/foxcpp/maddy.git
diff --git a/apps/maddy b/apps/maddy
new file mode 160000
index 0000000..9a6fdbf
--- /dev/null
+++ b/apps/maddy
@@ -0,0 +1 @@
+Subproject commit 9a6fdbf318382766601541f0fae5eebceb79fbad